Mr Piripi says Goldie painted Atama Paparangi throughout his lifetime, capturing the leader as he aged.

A portrait of Hera Puna, painted in 1933, is expected to reach up to $350,000. She was renowned for her bravery: during the Battle of Orakau in Waikato in 1864 she protected her husband by standing in front of a soldier, giving her husband time to reload his gun.